gistfile1.txt

jgorak@momentum ~/example $ cat vars/1-common/common.erb 
<%
 LOGDIR="/var/log"
%>
jgorak@momentum ~/example $ cat vars/2-region/dev.erb 
<%
 REGION="dev"
%>
jgorak@momentum ~/example $ cat vars/3-host/node1.erb 
<%
 HOST="host"
 JAVA_XMS="512m"
%>
jgorak@momentum ~/example $ cat templates/cleanup.sh.erb 
#!/bin/sh

LOGDIR=<%= LOGDIR %>
REGION=<%= REGION %>
HOST=<%= HOST %>
JAVA_XMS=<%= JAVA_XMS %>

java ...... $LOGDIR/$REGION -Dhost=$HOST .... -Xms=$JAVA_JMS
jgorak@momentum ~/example $ (cat vars/1-common/common.erb vars/2-region/dev.erb vars/3-host/node1.erb templates/cleanup.sh.erb )|erb



#!/bin/sh

LOGDIR=/var/log
REGION=dev
HOST=host
JAVA_XMS=512m

java ...... $LOGDIR/$REGION -Dhost=$HOST .... -Xms=$JAVA_JMS